420632862 has 64 divisors (see below), whose sum is σ = 948412416. Its totient is φ = 123482880.

The previous prime is 420632827. The next prime is 420632873. The reversal of 420632862 is 268236024.

It is a super-2 number, since 2×420632862² = 353864009188622088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175323 + ... + 177705.

It is an arithmetic number, because the mean of its divisors is an integer number (14818944).

Almost surely, 2^420632862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420632862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474206208).

420632862 is an abundant number, since it is smaller than the sum of its proper divisors (527779554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420632862 is a wasteful number, since it uses less digits than its factorization.

420632862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 420632862 is about 20509.3359716984. The cubic root of 420632862 is about 749.2631946164.

Adding to 420632862 its reverse (268236024), we get a palindrome (688868886).

The spelling of 420632862 in words is "four hundred twenty million, six hundred thirty-two thousand, eight hundred sixty-two".